Windmill



(No Model.)

l 2 Sheets-#heet l.. W. BURROWS.

WINDMILL.

Patented Feb. 28, 1888 7&1

2 Sheets-Sheet 2.

I (No Model.)

W. BURROWSV.

WIND MLL.

No. 378,429. Patented Peb. 28, 1888.

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Unirse STAfrns 4WILLIAM BURROVS, QF LITTLETON, ILLINOIS.

WINDIVHLL.

SPECIFICATION forming part of Letters Patent No. 378,429, dated February28, 1888. Application filed July i?, 1887. Serial No. 243,235. (Nomodel.)

To all whom, it may concern.:

Be it known that I, W ILLIAM Bnnnows, a citizen of the United States,residing at Little ton, in the county of Schuyler and State of Illinois,have invented a new and useful Im- I the rods L is journaled a blade orfan, N, the

provenient in lVindmills, of which the follwing is a specification.

My invention relates to an improvement in windmills; and it consists inthe peculiar eonstruction and combination of devices, that will be morefully set forth hereinafter, and particularly pointed ont in the claims.

In the drawings, Figure lis a side elevation ot' a windmill embodying myimprovements. Fig. 2 is a vertical section of the same. Fig. 3 is a topplan view showing the wind-wheel partly in section. Fig. 4 is ahorizontal sec- Fig. 5 is a detail view of one ofthe blades of thewheel, and Fig. 6 is a detached View of the bell-crank levers.

A represents a tower, which is of any snitable height, and is providedat its upper end with a circular cap, B, which has a large eentralopening.

C represents the turn-table, which comprises a pair of longitudinalbars, D, connected near their outer ends by a pair of transverse bars,E, which are secured to the lower edges of the bars D by means of bolts,as shown.

F represents a pair of bearingblochs, which are arranged on the uppersides ofthe bars E, and have their ends'bearing between the opposingsides of the bars D. In the opposing sides of the bars E, near theirupper edges, are made curved recesses, which receive opposite sides ofthe cap B, and thereby swivel the turntable to the said cap, so that thesaid turntable is adapted to rotate freely thereon. The bars D areextended from one end ofthe turntable, and have their outer ends boltedto op postte sides of the vane G. These bars D are arranged at such adist-ance apart as to be within the radius of the cap B, and they bearnpon the upper side of the said cap, and thereby support the turn-tablethereon.

H represents a shaft, which is j ournaled in the bearing-blocks F andextends forward from the turn-table. In the rear portion of the saidshaft is formed a crank, I. The portion of the shaft which projectsforward from the turn-table is square or angular in cross-sec` tion. Tothe front end of the shaft H is secured a hub, K, and in the said hubare secured the inner ends of a series of radial rods, L, the outer endsof which are secured to a circuiar metallic ring or tire, M. On each ofsaid fans or blades being provided on their rear sides, at a suitabledistance from one edge, with semi-cylindrical grooves O, adapted to titon the rods, and cleats P are bolted on the rear sides of the said fansor blades, near the ends thereof, and retain the said fans or blades onthe radial rods.

R represents a sliding hub, which is as ranged on the shaft on the innerside of the hub K, and the said sliding shaft is provided on its rearside with a peripheral grooved collar, S.

JournaledA in between the bars D,at a point slightly in advance of therear bearing-block, F, is the rcclcshaft T, near the ends of which aresecured a pair of bell-crank levers, U. To the upper ends of the saidbelllcrank levers are pvoted the rear ends of a pair ot' pitmen, V, andthe front ends of the said pit-men are pivoted to the ends of thetransverse yoke or cross-head lV, that engages the groove in the collarS. Rigidly connected to the roclrshaft T and extending rearwardlytherefrom is a lever-arm, X,whieh passes through atransverse opening inthe rear bearingbloclr, F, and on the said lever-arm is arranged aWeight, Y, which is adapted to slide in and out upon the said arm and isprovided with a set-screw, Z, by means of which it may be secured to thearms at any desired adjustment.

From the foregoing description it will be readily understood that theweighted lever-arm Y normally turns the roclrshaft so as to turn thebell-crank levers to such a position as will cause the pitinen and theyoke to draw the hub R rearward on the shaft from the hub K.

A represents a series of curved connectingrods which have their frontends pivoted to the inner sides of the inner cleats,]?, near the frontend thereof, and the rear ends of the. said connecting-rods are pivotedto the periphery of the hub R, and thereby when the said hub R is movedrearward on the shaft the feathering blades or fans are turned on theirradial rods and maintained obliquely to the wind, so that thewind-wheelwll be caused to rotate.

IOO

- B represents a pair of Vertical rods which have their upper endspivoted to the horizontal arms of tbe bell-crank levers and dependtherefrom. To the lower ends of the rods B is secured a circular disk,C', which has a large central opening.

D' represents a pair of short vertical rods which extend from the uppersides of the said disks, and are arranged at points midway between therods B'. On one side of the base of the tower is arranged a water tankor trough, E', on the front side of which at its upper edge is fulerumeda lever, F. The front end of the said lever is provided with a circularcollar or disk, G', which bears upon the upper side of the disk C' andhas a central opening through which the rods B' and D' extend. At therear end of the said lever is secured a float, H', which is arranged inthe tank.

l' represents an adjustable weight which is secured on the front portionof the lever F',

and is provided with a set-screw adapted tosecure it to the lever F atany desired adjustment.

K' represents a connecting-rod, which has its upper end connected to thecrank. To the lower end of the said connecting-rod is attached apump-rod, L. The pump (which is not here shown, as it may be of anysuitable construction and forms no part of my invention) has itsdischarge-pipe connected to the trough E', so as to discharge water intothe same.

The operation of my invention is as follows: 4When the wind blows, thewheel rotates, and thereby causes the pump-rod to reciprocate. The vanekeeps the wind-wheel directed to the wind. The reciprocation of thepump-rod causes the pump to operate, and thereby force water into thetrough or tank, and when the latter becomes filled to the desired levelthe float H rises on the surface of the water, thereby depressing thefront end of the lever F' and causing the same to bear downwardly on thedisk C', with the result that the rods B' are caused to turn therock-shaft T sufficienti y to raise the weighted lever X and to move thesliding hub R forward on the shaft, and thereby cause theconnecting-rods to turn the featheringblades to a position at rightangles to the rim of the wind-wheel and in line with the wind, andthereby cause the wind-wheel to cease rotating. XVhen the wind-wheel isin l operation in a .high wind, the force ofthe wind causes thefeathering blades or fans to turn on the radial rods, and therebypresent a small area of surface to the wind, and thereby regulate thespeed of the windwheel. When the wind blows sufficiently hard to causethe said fans to turn directly in line therewith, the wheel ceases tooperate'. The function of the weighted lever X isto restore thefeatheringblades to their normalposition obliquely to the wind aftereach blast or gust has passed.

By providing the bell-crank levers in the turn-table and the dependingrods B', connected disk C', on which the front ends of the lever F' saidlever and the operating parts ofthe windmill, nomatter in whichdirection the wind is blowing.

Having thus described my invention, l claimv l. The combination, in awindmill, ofthe vertically-reciprocating disk G', provided withthe/vertical guide-rods D', and the tioat-lever having the collar G' atits inner end, bearing' on the disk, and having the circular openingthrough which the rods D extend, subst-antiall y as described.

2. In a windmill, the combination of the turn-table, thecrank-shaftjournaled thereon, the wind-wheel attached to said shaft andhaving the featheringvblades, the reciprocating pump-rod attached to anddepending from the crank-shaft, the rock-shaft T, jourualed in theturn-table and having the weighted lever X, the bell-erank leversattached to said shaft, connections between the said bell-crank leversand the feathering-blades, the rods B', conneeted to and depending fromthe bell-crank levers, the disk G', connecting the lower ends of saidrods and having the vertical guiderods D', and the doatlever having itsinner end provided with the collar G, bearing on the disk C', andthrough which the guiderods eX- tend, substantially as described.

In testimony thatI claim the foregoing as my own l have hereto affixedmy signature in presence of two witnesses.

1n A WILLIAM s BUuRows.

mark. Vitnesses: V JOHN S. BAGBY,

FRED A. BAGBY.

to the said bell-crank levers and having the` bears, connection ismaintained between the'

